High-sealing liquid cooling box body

Abstract

This utility model discloses a highly airtight liquid-cooled housing, relating to the field of power battery structure technology. It includes a frame, module mounting beams, a housing hoisting mechanism, a liquid-cooled base plate, and a battery box. The frame comprises front and rear frames and side frames, both with "S"-shaped cross-sections. The front and rear frames and side frames are fixed to the liquid-cooled base plate around its perimeter using housing mounting nuts. The liquid-cooled base plate includes an upper liquid-cooled plate and a lower liquid-cooled plate, with the module mounting beams welded to the upper liquid-cooled plate. The housing hoisting mechanism is welded to both sides of the middle section of the side frames. This utility model provides a liquid-cooled housing with a simple structure and easy assembly, improving airtightness.

Description

Technical Field

[0001] This utility model relates to the field of power battery structure technology, and more specifically, to a highly sealed liquid-cooled box. Background Technology

[0002] As the core container for liquid circulation and heat dissipation, the liquid cooling housing's high sealing strength prevents coolant leakage and ensures stable operation of the heat dissipation medium. Especially in the scenario of new energy vehicle battery packs, liquid leakage can lead to safety hazards such as short circuits and thermal runaway; high sealing performance is fundamental to maintaining the long-term reliable operation of the battery system. The liquid cooling housing must withstand complex operating conditions such as vibration, temperature changes, and pressure fluctuations. Its high-sealing design resists external environmental corrosion (dust, moisture) while preventing internal coolant from seeping into electronic components or structural parts. A highly sealed liquid cooling housing can better extend the lifespan of the battery system.

[0003] Traditional air-cooling methods rely on airflow to dissipate heat from the cells inside the battery pack. However, poor airflow design can lead to insufficient cooling in some areas, and the airflow may become clogged with dust and debris after long-term use, reducing heat dissipation efficiency.

[0004] Natural cooling has extremely limited heat dissipation capacity, and the heat cannot be dissipated in time, which may lead to battery overheating or even thermal runaway. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and to propose a highly airtight liquid-cooled box. To achieve the above objective, this utility model adopts the following technical solution: A highly airtight liquid-cooled enclosure includes a frame, module mounting beams, an enclosure lifting mechanism, a liquid-cooled base plate, and a battery box. The frame includes front and rear frames and side frames, both of which have an "S"-shaped cross-section. The front and rear frames and side frames are fixed to the liquid-cooled base plate around its perimeter using enclosure mounting nuts. The liquid-cooled base plate includes an upper liquid-cooled plate and a lower liquid-cooled plate, and the module mounting beams are welded to the upper liquid-cooled plate. The enclosure lifting mechanism is welded to both sides of the middle section of the side frames.

[0006] Preferably, the lower end face of the side frame is provided with a plurality of high-voltage grounding nuts, which are fixed to the battery box and the external grounding device by threaded connection.

[0007] Preferably, the upper top of the side frame has a hole, and the lower bottom of the side frame is fixed to the liquid-cooled base plate by a housing mounting nut.

[0008] Preferably, the liquid-cooled lower base plate is provided with protruding water inlet and outlet portions and flow channels, and the liquid-cooled upper plate and the liquid-cooled lower base plate are provided with corresponding protruding portions. The two protruding portions are fixed by bolts, and the liquid-cooled lower base plate is fixedly connected by the water inlet and outlet portions and by brazing.

[0009] Preferably, the lower bottom of the front and rear frames has two grooves, the upper top of the front and rear frames has a hole, and the lower part of the front and rear frames has an opening.

[0010] Preferably, the internal flow channels of the liquid-cooled lower base plate are formed by stamping.

[0011] Preferably, the frame has heat insulation components.

[0012] Furthermore, compared to the prior art, the advantages of this utility model are as follows: 1. The highly sealed liquid-cooled box is made of high-strength materials and has strict production processes, resulting in high reliability and stability.

[0013] 2. The highly sealed liquid-cooled enclosure can quickly dissipate the heat generated by the battery cells through the circulation of coolant, achieving efficient heat dissipation. Compared to traditional air cooling and natural cooling methods, liquid cooling is more efficient.

[0014] 3. The highly sealed liquid-cooled enclosure can adapt to various harsh environmental conditions, such as high temperature, high humidity, and corrosion.

[0015] 4. The liquid-cooled box uses advanced refrigeration technology, which can efficiently utilize energy and reduce energy consumption.

[0016] 5. The front and rear frames are the same, as are the left and right frames. This can better save mold costs and reduce mold opening expenses. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a highly sealed liquid-cooled box proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the liquid cooling base plate of a high-sealing liquid cooling box proposed in this utility model.

[0019] Figure 3 This invention presents a structural diagram of the front and rear frames of a highly sealed liquid-cooled box.

[0020] Figure 4 This is a structural diagram of the side frame of a highly sealed liquid-cooled box proposed in this utility model.

[0021] In the diagram: 100 Enclosure, 1 Front and rear enclosure, 2 Side enclosure, 3 Module mounting beam, 4 Box hoisting mechanism, 5 Box mounting nut, 6 High-voltage grounding nut, 7 Liquid-cooled bottom plate, 8 Liquid-cooled upper plate, 9 Liquid-cooled lower bottom plate, 10 Inlet and outlet, 11 Flow channel, 12 Groove, 13 Hole, 14 Opening. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A highly sealed liquid-cooled enclosure includes a frame 100, a module mounting beam 3, an enclosure lifting mechanism 4, a liquid-cooled base plate 7, and a battery box. The frame 100 includes front and rear frames 1 and side frames 2, both of which have an "S"-shaped cross-section. The front and rear frames 1 and side frames 2 are fixed to the liquid-cooled base plate by enclosure mounting nuts 5. The liquid-cooled base plate 7 includes a liquid-cooled upper plate 8 and a liquid-cooled lower plate 9. The module mounting beam 3 is welded to the liquid-cooled upper plate 8. The enclosure lifting mechanism 4 is welded to both sides of the middle part of the side frames 2. The liquid-cooled base plate and the enclosure's surrounding frame outline are welded to form a complete battery box. The liquid-cooled base plate is located below the battery cells, which effectively dissipates the heat generated by the battery cells.

[0024] The lower end face of the side frame 2 is provided with a plurality of high-voltage grounding nuts 6. The high-voltage grounding nuts 6 are fixed to the battery box and the external grounding device by threaded connection to ensure that a stable electrical path is formed between the two.

[0025] The liquid-cooled lower base plate 9 is provided with protruding water inlet / outlet portions 10 and flow channels 11. The liquid-cooled upper plate 8 and the liquid-cooled lower base plate 9 are provided with corresponding protruding portions. The two protruding portions are fixed by bolts. The liquid-cooled lower base plate 9 is fixedly connected by the water inlet / outlet portions 10 and by brazing. The coolant of the liquid cooling system circulates through the water inlet / outlet, ensuring high-pressure fluid sealing and preventing coolant leakage.

[0026] The lower bottom of the front and rear frames 1 has two grooves 12, the upper top of the front and rear frames 1 has a hole 13, and the lower part of the front and rear frames 1 has an opening 14. The frame structure with a complex cross-sectional shape is manufactured by extrusion molding process, which greatly enhances the bending and torsional strength of the frame.

[0027] The upper top of the side frame 2 has a hole 13, and the lower bottom of the side frame 2 is fixed to the liquid-cooled base plate 7 by the box mounting nut 5 to achieve precise positioning and ensure that the liquid-cooled upper plate 8 and the lower base plate 9 are aligned. The fastening method of the nut and the hole 13 provides additional mechanical strength, prevents the brazed joint from loosening due to fluid pressure or vibration, and enhances the overall structural stability.

[0028] The internal flow channels 11 of the liquid-cooled lower base plate 9 are formed by stamping.

[0029] The frame 100 has heat insulation components that can isolate heat transfer between the two and prevent heat from being transferred to the enclosure frame and thus affecting other components.

[0030] The specific implementation method is as follows: S1. According to the load-bearing requirements, the front and rear frames 1 and side frames 2 on the four sides are designed with different S-shaped cross-sectional shapes, and a complete structure is formed by welding the four surrounding frames 100.

[0031] S2. The liquid-cooled base plate 7 is formed by stamping, and the liquid-cooled upper plate 8 and the liquid-cooled lower base plate 9 are formed by brazing to form a complete liquid-cooled plate.

[0032] S3. The stamped and brazed liquid-cooled base plate 7 and the frame 100 are connected by welding, which can enhance the fit between the liquid-cooled base plate 7 and the frame 100 and improve their sealing performance.

[0033] S4. The liquid-cooled upper plate 8 and the liquid-cooled lower plate 9 are connected as one piece by brazing to remove the gap between the two and improve their sealing performance.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-sealing liquid-cooled box body, comprising a surrounding frame (100), a module installation crossbeam (3), a box hoisting mechanism (4), a liquid-cooled bottom plate (7) and a battery box, characterized in that: The enclosure (100) includes a front and rear enclosure (1) and a side enclosure (2). The front and rear enclosure (1) and the side enclosure (2) are both "S" shaped structures. The front and rear enclosure (1) and the side enclosure (2) are fixed around the liquid-cooled base plate by the box mounting nuts (5). The liquid-cooled base plate (7) includes a liquid-cooled upper plate (8) and a liquid-cooled lower plate (9). The module mounting beam (3) is welded to the liquid-cooled upper plate (8). The box hoisting mechanism (4) is welded to both sides of the middle part of the side enclosure (2).

2. The liquid-cooled box body with high sealing performance according to claim 1, characterized in that: The lower end face of the side frame (2) is provided with a plurality of high-voltage grounding nuts (6), and the high-voltage grounding nuts (6) are fixed to the battery box and the external grounding device by threaded connection.

3. The liquid-cooled box body with high sealing performance according to claim 1, characterized in that: The liquid-cooled lower base plate (9) is provided with protruding water inlet / outlet portions (10) and flow channels (11). The liquid-cooled upper plate (8) and the liquid-cooled lower base plate (9) are provided with corresponding protruding portions. The two protruding portions are fixed by bolts. The liquid-cooled lower base plate (9) is fixedly connected by the water inlet / outlet portions (10) and by brazing.

4. The liquid-cooled box body with high sealing performance according to claim 1, characterized in that: The lower bottom of the front and rear frames (1) has two grooves (12), the upper top of the front and rear frames (1) has a hole (13), and the lower part of the front and rear frames (1) has an opening (14).

5. The liquid-cooled box body with high sealing performance according to claim 1, characterized in that: The upper top of the side frame (2) has a hole (13), and the lower bottom of the side frame (2) is fixed to the liquid-cooled base plate (7) by a box mounting nut (5).

6. The liquid-cooled box body with high sealing performance according to claim 3, characterized in that: The internal flow channels (11) of the liquid-cooled bottom plate (9) are formed by stamping.

7. The liquid-cooled box body with high sealing performance according to claim 5, characterized in that: The frame (100) has heat insulation components.

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